Self running coil?

[maw2432]

Luc,   could you go over how you wound your coil in more detail.   You indicated it was very important, so anyone wanting to replicate or comfirm your results may need to be sure they wind it the way you have.   I had to order some 24 AWG wire so I would have the same as yours.  Where did you get your cores?   Thanks

Bill

[gotoluc]

Hi All,

a new video is available now.

Link: http://www.youtube.com/watch?v=sbgwlJx0zNw

Luc

[gyulasun]

Luc,

Sorry I do not understand where exactly is the 100 Ohm carbon resistor:
in series with the source electrode of the FET?

Gyula

EDIT: Ok now I figured out it is in series with the GND clip coming from the signal gen.

[gotoluc]

Hi everyone,

Please forgive me for asking this here but it's just as good a place as any.

I sold almost everything late last year 'cause o' tha 'conomy.  That included my Tektronix scope.  Now I need a scope but I'm computer 'rich; at the moment.  I have been looking at PC Oscilloscopes online and think this is the way to go.

I found this for US $300.00:
http://www.allspectrum.com/store/product_info.php?cPath=22&products_id=2778&osCsid=329f8a4810af600caa31be6ba1a2b3b2&sdesc=USB+PC+OSCILLOSCOPE+%2B+FUNCTION+GENERATOR%2C+2+Channel+%3D%3DNEW%3D%3D+Model+%23+PCSGU250

It also has a function generator.  I've been looking for a 'catch' like "... Does not include $10,000 software license" or something.  Can't find it. So what do you think?  Any experiences / recommendations?

Thanks,

Greg

Hi Greg,

I would recommend this one: http://cgi.ebay.com/Hantek-DSO-2090-PC-USB-Digital-Oscilloscope-100MS_W0QQitemZ280446263098QQcmdZViewItemQQptZBI_Oscilloscopes?hash=item414be65f3a

40MHz with software included and spectrum analyzer $179. delivered to your door.

I used this scope for years now. Best value I ever got for the money.

They also have this generator: http://cgi.ebay.com/PC-USB-Arbitrary-Waveform-Generator-Function-SALE-NIB-A_W0QQitemZ140385695694QQcmdZViewItemQQptZBI_Signal_Sources?hash=item20afa3b7ce

$153. delivered

Or this high end one if you need the options: http://cgi.ebay.com/Digital-USB-Arbitrary-Waveform-Generator-Counter-2-7GHz_W0QQitemZ140385457576QQcmdZViewItemQQptZBI_Signal_Sources?hash=item20afa015a8

Hope this helps.

Luc

[Magluvin]

Good vid. I would not worry about proving anything further on that matter. =]

Was thinking if another resonant circuit could be inserted that will drive the fet. As in if you start it with the sig gen, than remove the sig gen and the second resonant circuit could keep the fet pulsing. Or some sort of delayed feedback from the oscillator to trip the fet.

I see you are at 24v now. It must have climbed quick in that short of time and rested at 24v.

Also another solution would be to get a JT to pulse the fet. It will probably use less than the 555 or SG chip circuit. MK1 could probably suggest a lil kicker for ya.
And the jt bat would surely enjoy sipping on the cap.  =]

Mags